JL Audio E6450 User's Manual
Contents
1. MY AMPLIFIER TURNS ON BUT THERE IS NO OUTPUT Check the speaker wires for a possible short either between the positive and negative leads or between either speaker lead and the vehicle s chassis ground If a short is present you will experience distorted and or attenuated output The Protect light may also illuminate in this situation It may be helpful to disconnect the speaker wires from the amplifier and use a different set of wires connected to a test speaker Check the nominal load impedance to verify that each channel of the amplifier is driving a load equal to or greater than 29 4Q bridged Check the input signal and input signal cables to make sure signal is present at the Amplifier Inputs and the cables are not pinched or loose It may be helpful to try a different set of cables and or a different signal source to be sure MY AMPLIFIER SHUTS OFF ONCE IN A WHILE USUALLY AT HIGHER VOLUMES Check your voltage source and grounding point The power supply of the e6450 will operate with charging system voltages down to 8V Shutdown problems at higher volume levels can occur when the charging system voltage drops below 8V These dips can be of very short duration making them extremely difficult to detect with a common DC voltmeter To ensure proper voltage inspect all wiring and termination points It may also be necessary to upgrade the ground wire connecting the battery to the vehicle s chassis a2. APPENDIX A Input Sensitivity Level Setting Following the directions below will allow the installer to adjust the input sensitivity of each amplifier channel pair simply and easily in just a few minutes using equipment which is commonly available in installation bays Necessary Equipment e Digital AC Voltmeter e CD with a sine wave test tone recorded at 0 dB reference level in the freguency range to be amplified for that set of channels 50 Hz for subwoofer channels kHz for a midrange application Do not use attenuated test tones 10 dB 20 dB etc The Nine Step Procedure 1 Disconnect the speaker s from the amplifiers speaker output connectors 2 Turn off all processing bass treble loudness EQ etc on the source unit processors if used and amplifier Set fader control to center position and subwoofer level control to 3 4 of maximum if used to feed the e6450 3 Turn the Input Sens control all the way down 4 Set the source unit volume to 3 4 of tull volume This will allow for reasonable gain overlap with moderate clipping at full volume 5 Using the chart on this page determine the target voltage for input sensitivity adjustment according to the nominal Impedance of the speaker system connected to the amplifier outputs 6 Verify that you have disconnected the speakers before proceeding Play a track with an appropriate sine wave within the freguency range to be amplified by the e6450 at 3 4
3. 6 Controls section to Discrete This will most commonly be accomplished by using the six RCA type connections it is possible to use the eight pin connector with amplified signals for input into channels 2 3 8 4 and RCA type connections for input into channels 5 amp 6 however most source units with a dedicated subwoofer output will also have at least one pair of full range outputs If you wish to feed all six channels by using only four channels of full range input set the Input Mode switch in the Channel 5 amp 6 Controls section to SUM and use only the inputs to channels 2 3 amp 4 If you wish to feed all six channels by using two channels of full range input and two channels of low frequency input subwoofer output from the source unit set the Input Mode switch in the Channel 5 8 6 Controls section to Discrete It will be necessary to split the full range signals with y adaptors and feed these signals into the inputs to channels 2 3 amp 4 The dedicated subwoofer signal should be sent to channels 5 amp 6 If you wish to use only two channels of input to deliver signal to all six amplifier channels it will be necessary to split the two signals with y adaptors and feed these signals into the inputs to channels 2 3 amp 4 Set the Input Mode switch in the Channel 5 amp 6 Controls section to SUM and use only the inputs to channels
4. For Service Information in the U S A please call JL Audio customer service 954 443 1100 during normal business hours 9 00 AM 5 30 PM Eastern Time JL Audio Inc 10367 North Commerce Pkwy Miramar FL 33025 do not send product for repair to this address International Warranties Products purchased outside the United States of America are covered only by that country s distributor and not by JL Audio Inc Absolute Symmetry Class AB Amplifier Circuit is covered by U S Patent 6 294 959 and is pending in the countries listed below Austria Belgium Brazil Canada China France Germany Indonesia Italy Japan Republic of Korea Mexico Netherlands Norway Russian Federation Singapore Sweden Switzerland United Kingdom and all other PCT countries e6450MAN CH 03 2003
5. 2 3 amp 4 The same input connection option does not need to be used for each channel pair The Input Sens adjustment is independent for each channel pair and must be adjusted based on input level and the impedance of the load on that pair of channels Specific Input Sens adjustment information is given in Appendix A page 2 L1 amp 2 Controls Filte ns Filter Mode 60 Off HP LP 5o ist Input Mode In Sum Discrete Chann 6 JL AUDIO e6450 AMPLIFIER CONTROLS Input Sensitivity These controls labeled Input Sens can be used to match the source unit s output voltage s to each input stage of the e6450 for maximum clean output Rotating an Input Sens control clockwise will result in higher sensitivity louder for a given input voltage Rotating an Input Sens control counterclockwise will result in lower sensitivity quieter for a given input voltage To properly set the amplifier for maximum clean output please refer to Appendix A page 12 in this manual After using this procedure you can then adjust any or all Input Sens levels downward if this is required to achieve the desired system balance Do not increase any Input Sens setting for any channel s of any amplifier in the system beyond the maximum level established during the procedure outlined in Appendix A page 2 Doing so will result in audible distortion and possible speaker damage Filter Con
6. Cosmetic damage due to accident or normal wear and tear is not covered under warranty Warranty is void if the product s serial number has been removed or defaced Any applicable implied warranties are limited in duration to the period of the express warranty as provided herein beginning with the date of the original purchase at retail and no warranties whether express or implied shall apply to this product thereafter Some states do not allow limitations on implied warranties therefore these exclusions may not apply to you This warranty gives you specific legal rights and you may also have other rights which vary from state to state If you need service on your JL AUDIO product All warranty returns should be sent to JL AUDIO s Amplifier Service Facility freight prepaid through an authorized JL AUDIO dealer and must be accompanied by proof of purchase a copy of the original sales receipt Direct returns from consumers or non authorized dealers will be refused unless specifically authorized by JL AUDIO with a valid return authorization number Warranty expiration on products returned without proof of purchase will be determined from the manufacturing date code Coverage may be invalidated as this date is previous to purchase date Non defective items received will be returned freight collect Customer is responsible for shipping charges and insurance in sending the product to JL AUDIO Freight damage on returns is not covered under warranty
7. source unit volume 7 Connect the AC voltmeter to the speaker output connectors of the amplifier If the channel pair is operating in stereo it is only necessary to measure one channel If bridged make sure you test the voltage at the correct connectors L and R 8 Increase the Input Sens control until the target voltage is observed with the voltmeter 9 Once you have adjusted the e6450 to its maximum low distortion output level reconnect the speaker s The Input Sens controls can now be adjusted downward if the amplifier requires attenuation to achieve the desired system balance MIMPORTANT Do not increase any Input Sens setting for any amplifier channel or channel pair in the system beyond the maximum level established during this procedure Doing so will result in audible distortion and possible speaker damage It will be necessary to re adjust the Input Sens for the affected channels if any equalizer boost is activated after setting the Input Sens with this procedure This applies to any EQ boost circuit including source unit tone controls or EQ circuits EQ cuts will not require re adjustment Nom Target AC Voltage Impedance 80 26 8 V 60 25 6 V 40 24 6 V 30 not recommended 20 not recommended 12 JL AUDIO e6450 APPENDIX B Precise Frequency Selection Chart FILTER FREQ AMP FILTER Detent Panel Actual Number Marking Freq Full counter clockwise 53
8. CD JL AUDIO e6450 six channel full range amplifier owner s manual Thank you for purchasing a JL Audio amplifier for your automotive sound system Your amplifier has been designed and manufactured to exacting standards in order to ensure years of musical enjoyment in your vebicle For maximum performance and extended warranty coverage we highly recommend that you have your new amplifier installed by an authorized JL Audio dealer Your authorized dealer has the training expertise and installation equipment to ensure optimum performance from this product Should you decide to install the amplifier yourself please take the time to read this manual thoroughly so as to familiarize yourself with its installation requirements and setup procedures If you have any questions regarding the instructions in this manual or any aspect of your amplifiers operation please contact your authorized JL Audio dealer for assistance If you need further assistance please call the JL Audio Technical Support Department at 954 443 1100 during business hours Eastern Time Zone JL AUDIO PROTECT YOUR HEARING We value you as a long term customer For that reason we urge you to practice restraint in the operation of this product so as not to damage your hearing and that of others in your vehicle Studies have shown that continuous exposure to high sound pressure levels can lead to permanent irreparable hearing loss This and all other hi
9. Input Sens 120 Bass Boost Input Mode input EF e Filter Mode 5 are summed to Bass EQ is ctivated 2170 Sum Discrete EE of HP Lp 50 28 Channel 5 8 6 Controls Filter Freg Hz Filter Mode Control The e6450 employs a 2dB per octave filter for each pair of channels one filter for channels amp 2 another filter for channels 384 and another filter for channels 5 amp 6 Each of these filters can be configured independently into one of two filter types or defeated completely by way of the three position Filter Mode switches Off Defeats the filter completely allowing the full range of frequencies present at the inputs to feed the amplifier This is useful for systems utilizing outboard crossovers or requiring full range reproduction from one two or all of the e6450 s channel pairs LP Low Pass Configures the filter to attenuate frequencies above the selected filter frequency at a rate of 12dB per octave This is useful for connection of subwoofer s to one two or all of the e64505 channel pairs in a bi amplified system HP High Pass Configures the filter to attenuate frequencies below the selected filter frequency at a rate of 2dB per octave This is useful for connection of component speakers to one two or all of the e6450 s channel pairs in a bi amplified system 2 Filter Freq Hz The filter frequency markings surrounding this rotary control are for reference purposes
10. J 53 O2 BO 53 J AASMA AMI 53 OF aate ats soi 54 J ea 54 Ol i 55 7 0 0 55 O8 195 aasal 56 OP A gates TI 56 Oh ae deve es eee ee 57 J 58 E VS 59 ese E e snes 62 J 60 65 J une ee en eats 65 J a a oe 66 aka sae 70 Oa eea s teoee otek 73 J Gee veces 77 20 sewed BO sa 8l 1 00 aces ees 84 OD oi digas ae ue eee 88 Dies geeence dad ntaaduesosss 94 24 visuaal mad 9004 IOI J 104 26 120 115 2 118 DOr 4s stent ale a oe aca cers 28 DD eG 37 SO Jeena 146 J A EE 64 E PA ONO aia 77 as maa 193 o EEEE 197 Js au a eens eee 209 DG mea ut ua 213 OP T E ss vil 05 216 38 200 218 Os ga 5 225 Full clockwise 225 APPENDIX C e6450 Specifications GENERAL SPECIFICATIONS Recommended Fuse Value 60A Recommended Fuse Type AGU or MaxiFuse INPUT SECTIONS No of Inputs Three Stereo Pairs Input Type Differential noise cancelling with RCA jack inputs low level three pairs and multi pin jack high level two pairs Input Range 200mV 8V RMS AMPLIFIER SECTION Amplifier Topology Class AB with patented Absolute Symmetry dual N Channel MOSFET output design Power Supply Unregulated MOSFET switching type Rated Power Stereo 45W RMS x 6 4Q 12 5V 75W RMS x 6 2Q 12 5V Rated Power Bridged 90W RMS x 3 0 8Q 12 5V I50W RMS x 3 42 12 5V THD at Rated Power lt 0 08 4
11. MPH will hurt you Stupid Mistakes to Avoid e Check before drilling any holes in your vehicle to make sure that you will not be drilling through a gas tank brake line wiring harness or other vital vehicle system e Do not run system wiring outside or underneath the vehicle This is an extremely dangerous practice which can result in severe damage to your vehicle and person e Protect all system wires from sharp metal edges and wear by carefully routing them tying them down and using grommets and loom where appropriate e Do not mount the amplifier in the engine compartment under the vehicle on the roof or in any other area that will expose the amplifier circuitry to the elements JL AUDIO e6450 PRODUCT DESCRIPTION The JL Audio e6450 is a six channel full range amplifier utilizing patented Absolute Symmetry Class AB technology for all channels The e6450 can be operated with a wide variety of source units and system configurations TYPICAL INSTALLATION SEQUENCE The following represents the sequence for a typical amplifier installation using an aftermarket source unit Additional steps and different procedures may be required in some applications If you have any questions please contact your authorized JL Audio dealer for assistance 1 Disconnect the negative battery post connection and secure the disconnected cable to prevent accidental re connection during installation This step is not optional 2 Run p
12. and are generally accurate to within 1 3 octave or better If you would like to select the filter cutoff frequency with a higher level of precision consult the chart in Appendix B page 3 Tuning Hint If you are using the e6450 to drive a subwoofer system LP mode a component satellite speaker system HP mode or both 100 Hz is a good baseline Filter Freq Hz setting After properly adjusting the Input Sens as outlined in Appendix A page 2 you can fine tune the Filter Freq Hz control to achieve the desired system frequency response JL AUDIO e6450 BASS BOOST CONTROLS eft Amplifier Status Channel 18 2 Co O O Input Sens Filte Power Protect QD Off D Bass Boost Inpu Off On Sum ight 1 Remote Bass Port Bass Boost Channels 5 amp 6 This switch allows the user to activate a 6 dB boost centered at 48 Hz for channels 3 amp 4 VVhen the Bass Boost in the Channel 5 6 Controls section is activated the inputs to CH 5 Left and CH 6 Right are summed to create a mono signal The Filter Mode switch in the Channel 5 8 6 section must be in the LP position for the bass boost to be functional 2 Remote Bass Port This port allows you to connect an optional remote boost knob sold separately JL Audio Model RBC 1 that can be mounted in the front of the vehicle With the RBC connected the boost is no longer limit
13. cated subwoofer output is connected to the CH 5 Left and CH 6 Right inputs select Discrete on the Input Mode switch in the Channel 5 amp 6 Controls section Result in this mode the user has the ability to control the absolute level of the LF channels as well as both pairs of HF channels IMPORTANT When using a source units dedicated subwoofer output set the Input Sens of any channels receiving input from the subwoofer output with the source units subwoofer level control set at 3 4 of full output See Appendix A page 2 for details Crossover Setup for Bi Amplified System with one e6450 Once the input sections have been configured appropriately go to the Channel 5 amp 6 Controls Select LP low pass on the Filter Mode switch and an appropriate Filter Freq 100 Hz is a good starting point Next turn your attention to the Channel amp 2 Controls and Channel 3 amp 4 Controls and select HP high pass on the Filter Mode switches and an appropriate Filter Freq again 100 Hz is a good starting point After proper adjustment of the Input Sens controls for all three channel pairs using the method shown in Appendix A page 12 you can fine tune filter frequencies and attenuate any pair of channels to achieve proper balance For precise filter frequency information refer to Appendix B page 3 JL AUDIO e6450 11
14. dance connected to the amplifier output s Connecting the speaker outputs to an impedance lower than 22 stereo 4Q bridged will cause this protection mode to activate The amplifiers output may cycle on and off when this protection mode is activated When the problem is eliminated the amplifier will return to normal operation SERVICING YOUR JL AUDIO AMPLIFIER If your amplifier fails or malfunctions please return it to your authorized JL Audio dealer so that it may be sent in to JL Audio for service There are no user serviceable parts or fuses inside the amplifier The unique nature of the circurtry in the JL Audio amplifiers requires specifically trained service personnel Do not attempt to service the amplifier yourself or through unauthorized repair facilities This will not only void the warranty but may result in the creation of more problems within the amplifier If you have any questions about the installation or setup of the amplifier not covered in this manual please contact your dealer or the JL AUDIO Technical Department for assistance 954 443 1100 9 00 AM 5 30 PM Eastern Time Monday Friday JL AUDIO e6450 SYSTEM CONFIGURATIONS The e6450 is a flexible amplifier well surted for a multitude of system configurations In this section the most likely configurations are explained in detail Once you have selected your desired configuration you can use the amplifier panel drawing on pages 16 8 17 to mark th
15. e required switch positions for easy reference BI AMPLIFIED SYSTEMS Bi amplified systems are defined as systems in which separate amplifier channels drive low frequency LF and high frequency HF speakers and are separately filtered to send appropriate frequency ranges to each speaker system The most common application of bi amplification in mobile audio is to drive a subwoofer system from one or more amplifiers or channels and component speakers from separate amplifiers or channels The e6450 is designed to work as the only amplifier in a bi amplified system BI AMPLIFIED SYSTEM WITH THE e6450 In this configuration channels 5 amp 6 of the e6450 will drive subwoofers stereo 5W x 2 at 2Q or bridged SOW x at 4Q with low pass filtering Channels amp 2 and channels 3 amp 4 will drive component speakers in stereo 5W x 4 at 202 with high pass filtering Input connection options for a bi amplified system with one e6450 are as follows A No User Adjustability Required a basic source unit or processor with a single pair of stereo outputs Input Connections a single pair of stereo source unit outputs each split with a Y Adaptor allowing the left signal to be sent to the CH I Left and CH 3 Left inputs and the right signal to be sent to the CH 2 Right and CH 4 Right inputs of the e6450 select SUM on the Input Mode switch in the Channel 5 amp 6 Controls section Resu
16. ed to O or 6 dB allowing a range of O 12 dB of boost to be selected SPEAKER OUTPUTS The e6450 s speaker outputs are designed to accept 8 AWG 16 AWG wire Each pair of the e6450 s channels are designed to deliver power into speaker loads equal to or greater that 2Q when using a stereo configuration and speaker loads equal to or greater than 4Q when using a bridged configuration Ch1 re Che R Ch3 e Ch4 ne O o mir OO Q min 2Q m 0 CG Q mir it waa ke AR min Jessen me 4Q MIN sens IMPORTANT Speaker loads below 2Q nominal per channel are not recommended and may cause the amplifier to Initiate a protection mode and shut itself off BRIDGING CONSIDERATIONS Bridging is the practice of combining the output of two amplifier channels to drive a single load When bridged each channel produces signals of equal magnitude but opposite polarity The combined output of the two channels provides twice the output voltage available from a single channel The e6450 has been designed for bridging of its channel pairs without the need for input inversion adaptors To bridge a pair of channels use the Left and Right speaker connectors only the Left and Right remain unused Vhen bridged each channel will deliver optimum power into a 4Q load IMPORTANT When a pair of channels are bridged they will deliver 150W x into a 4Q load or 90W x into an 8Q load Ope
17. er ce Hz Channel 3 8 4 Controls CH5 amp 6 Input Sens Bass Boost Input Mode Input Signals are summed to Bass ang tivat Off on Sum Discrete FEE Channel 5 8 6 Controls Sens Filter Mode IO Off HP LP Filter Mode rr Off HP LP Filter BER Hz Filter Freq Hz JL AUDIO e6450 17 18 JL AUDIO e6450 JL AUDIO e6450 19 LIMITED WARRANTY AMPLIFIERS USA JL AUDIO warrants this product to be free of defects in materials and workmanship for a period of ninety 20 days from the original date of purchase The warranty term is extended to two 2 years if installation is performed or approved by an authorized JL AUDIO dealer proof of installation or approval required on purchase receipt This warranty is not transterrable and applies only to the original purchaser from an authorized JL AUDIO dealer Should service be necessary under this warranty for any reason due to manufacturing defect or malfunction JL AUDIO will at its discretion repair or replace the defective product with new or remanufactured product at no charge Damage caused by the following is not covered under warranty accident misuse abuse product modification or neglect failure to follow installation instructions unauthorized repair attempts misrepresentations by the seller This warranty does not cover incidental or consequential damages and does not cover the cost of removing or reinstalling the unit s
18. gh power amplifiers are capable of producing such high sound pressure levels when connected to a speaker system Please limit your continuous exposure to high volume levels While driving operate your audio system in a manner that still allows you to hear necessary noises to operate your vehicle safely horns sirens etc SERIAL NUMBER In the event that your amplifier requires service or is ever stolen you will need to have a record of the products serial number Please take the time to enter that number in the space provided below The serial number can be found on the bottom panel of the amplifier and on the amplifier packaging Serial Number Power Ch I amp 2 Input Ch amp 2 Filter Ch 3 amp 4 Left amp Right Status Sensitivity Frequency Filter Mode High Level Input Jacks Indicator Control Selector Selection pg 6 pg 9 P8 7 Chl amp 2 P amp 7 Ch3 amp 4 P87 Ch3 amp 4 Channels 3 amp 4 Protection Status Filter Mode Input Sensitivity Filter Frequency Preamp Input Jacks Indicator S5electio Control Selector 6 i 9 Ki D nmam ki 7 68 7 OF Amplifier Inputs CH 1 Left CH 3 Let C45 Left 12149 8C amp Irput Sers E Level Inpuzs mM Boost M Mode F cnals Filter Mode i E OOO ec Teme pg 6 pg 6 O O Sens Fiker Mode g 50 12 3 4 CH 2 Richt CH 4 Ricnt CH 6 Right Remcte Bass Port _ Channels amp 2 Channels 5 amp 6 Pream
19. he alternator s positive connection to the battery lo prevent voltage drops these wires should be upgraded to 4 AWG when installing amplifier systems with main fuse ratings above 60A FUSE REQUIREMENTS It is absolutely vital that the main power wire s to the amplifier s in the system be fused within 18 inches 45 cm of the positive battery post connection The fuse value at each power wire should be high enough for all of the equipment being run from that power wire If only the e6450 is being run from that power wire we recommend a 60A fuse be used AGU big glass fuse or MaxiFuse big plastic body fuse types are recommended No fuse is required or recommended directly before the amplifier power connection If one is desired we recommend the use of a 60A AGU fuse or MaxiFuse type TURN ON LEAD The e6450 uses a conventional 12V remote turn on lead typically controlled by the source unit s remote turn on output The amplifier will turn on when 12V is present at its Remote input and tum off when 12V is switched off If a source unit does not have a dedicated remote turn on output the amplifiers turn on lead can be connected to 2V via a switch that derives power from an ignition switched circuit The e6450 s Remote turn on connector Is designed to accept 18 AWG 12 AWG wire To connect the remote turn on wire to the amplifier first back out the set screw on the top of the terminal block using the supp
20. is mode the user has the ability to fade or control the level of the LF channels relative to the HF channels via the source units fader control without exceeding the maximum clean output level set by each amplifier section s Input Sens controls D Subwoofer Level Control Only Required a source unit or processor with one pair of stereo outputs and dedicated subwoofer outputs Input Connections the stereo pair of source unit outputs each split with a Y Adaptor allowing the left signal to be sent to the CH Left and CH 3 Left inputs and the right signal to be sent to the CH 2 Right and CH 4 Right inputs of the e6450 The source units dedicated subwoofer outputs are connected to the CH 5 Left and CH 6 Right inputs select Discrete on the Input Mode switch in the Channel 5 amp 6 Controls section Result in this mode the user has the ability to control the absolute level of the LF channels relative to the HF channels E Independent level control of all three channel pairs Required a source unit or processor with two pairs of stereo outputs and dedicated subwoofer outputs Input Connections one pair of stereo source unit outputs Is connected to the CH Left and 10 JL AUDIO e6450 CH 2 Right inputs the second pair of stereo source unit outputs Is connected to the CH 3 Left and CH 4 Right inputs and the source units dedi
21. lied 2 5mm hex wrench Strip 1 2 inch 12mm of wire and insert the bare wire into the terminal block seating it firmly so that no bare wire is exposed While holding the wire in the terminal tighten the set screw firmly taking care not to strip the head of the screw and making sure that the wire is firmly gripped by the set screw JL AUDIO e6450 INPUT SECTION The e64505 input section allows you to send signal to the amplifier section through the use of two four or six inputs and offers two distinct input connection options These are 1 Three pairs of traditional RCA type connections designed to accept input from source units with line level outputs 2 An eight pin connector designed to accept input from amplified sources such as factory source units or source units not equipped with line level outputs Channels 5 amp 6 of the e6450 do not have discrete Inputs on this connector However signal from channels amp 2 and channels 3 amp 4 can be summed and sent to channels 5 8 6 when SUM is selected with the Input Mode switch in the Channel 5 amp 6 Controls section _ Amplifier Inputs CH 1 Left CH 3 Left CH 5 Left Am 1 9 9 9 Ol o OXO High Level Inputs 000 O t OOOO 1234 CH 2 Right CH 4 Right CH 6 Right Rer If you wish to send six discrete channels into the e6450 simply use all six inputs and set the Input Mode switch in the Channel 5 amp
22. ling Efficiency Considerations The outer shell of your JL Audio amplifier is designed to remove heat from the amplifier circuitry For optimum cooling performance this outer shell should be exposed to as large a volume of air as possible Enclosing the amplifier in a small poorly ventilated chamber can lead to excessive heat build up and degraded performance If an installation calls for an enclosure around the amplifier we recommend that this enclosure be ventilated with the aid of a fan In normal applications fan cooling is not necessary Channels 3 amp 4 Channels 5 amp 6 Speaker Outputs Speaker Outputs pg 8 pg 8 Ch4 R Ch5 L Ch6 R 29 min 8 20 min 3 20 min O 20 min Bridged 4Q min sss MIMPORTANT Mounting the amplifier upside down is strongly discouraged If mounting the amplifier under a seat make sure there is at least inch 2 5 cm of space above the amplifiers outer shell to permit proper cooling Safety Considerations Your amplifier needs to be installed in a dry well ventilated environment and in a manner which does not interfere with your vehicle s safety equipment air bags seat belt systems ABS brake systems etc You should also take the time to securely mount the amplifier using the supplied screws so that it does not come loose in the event of a collision or a sudden jolt to the vehicle 12 Ibs of aluminum traveling at 60
23. llivolt range with the source unit at half volume If you are reading sufficient voltage check your speaker connections as explained below Check to ensure that the speaker wires are making a good connection with the metal inside the terminal block The speaker wire connectors are designed to accept up to 12 AWG wire Make sure to strip the wire to allow for a sufficient connection with the metal inside the terminal block MY AMPLIFIER S OUTPUT FLUCTUATES WHEN I TAP ON IT OR HIT A BUMP Check the connections to the amplifier Make sure that the insulation for all wires has been stripped back far enough to allow a good contact area inside the terminal block Check the input connectors to ensure that they all are making good contact with the input jacks on the amplifier HOW DO I PROPERLY SET THE INPUT SENSITIVITY ON MY AMPLIFIER Please refer to Appendix A page 12 to set the input sensitivity for maximum low distortion output JL AUDIO e6450 15 INSTALLATION NOTES Use this diagram to document your amplifier s switch and control positions Amplifier Inputs CH 1 Left CH 3 Left E High Level Inputs 000 O t O O O O 123 4 Tee OQO 100 CH 2 Right CH 4 Right CH 6 Right Remote Bass Port 16 JL AUDIO e6450 Filter Mode 60 120 O O Input Sens Power Protect O OIT ss Off HP LP 59 CH 5 Left Amplifier Status Channel 1 8 2 Controls Filt
24. lt the relative level of the LF and HF channels will be fixed by the e6450 s Input Sens settings and will not be user adjustable from the front of the vehicle B Fade Front vs Rear with no Subwoofer Level Control Required a basic source unit or processor with two pairs of stereo outputs Input Connections one pair of stereo source unit outputs is connected to the CH Left and CH 2 Right inputs and the second pair of stereo source unit outputs is connected to the CH 3 Left and CH 4 Right inputs of the e6450 select SUM on the Input Mode switch in the Channel 5 amp 6 Controls section Result the relative level of the LF and HF channels will be fixed by the e6450 s Input Sens settings and will not be user adjustable from the front of the vehicle C Fade Subwoofer Level vs HF Level Required a basic source unit or processor with two pairs of stereo outputs Input Connections the first stereo pair of source unit outputs each split with a Y Adaptor allowing the left signal to be sent to the CH I Left and CH 3 Left inputs and the right signal to be sent to the CH 2 Right and CH 4 Right inputs of the e6450 The second stereo pair of source unit outputs is connected to the CH 5 Left and CH 6 Right inputs select Discrete on the Input Mode switch in the Channel 5 amp 6 Controls section Result in th
25. nd both negative high level input connections as described above make sure to connect negative wires to negative wires and positive wires to positive wires 2 Left Right Channel Information VVhen bridged and fed by a stereo input a pair of the e64505 channels will automatically combine the left and right channels into a summed mono left right channel This option is useful when using a pair of the e6450 s channels to drive a subwoofer system or a summed mono center channel AMPLIFIER STATUS INDICATOR LIGHTS PROTECTION CIRCUITRY There are two status indicator lights on the input control end of the amplifier Left Amplifier Status Char Off Right Remote Bass Port 1 Power Green lights to indicate that the amplifier is turned on and operating normally 2 Protect Red lights or flashes to indicate that the amplifier protection circurtry has been activated to prevent product failure a If the red Protect indicator lights steadily without flashing the amplifier has exceeded its safe operating temperature This causes the amplifier to shut off in order to protect its circuitry When the amplifiers temperature drops to a safe level the red Protect indicator will shut off and the amplifier will return to normal operation b If the red Protect indicator flashes intermittently the protection circurtry has detected a short circuit or a dangerously low impe
26. nd the power wire connecting the alternator to the battery Many vehicles employ small 10 AWG 6 AWG wire to ground the battery to the vehicle s chassis and to connect the alternator to the battery To prevent voltage drops these wires should be upgraded to 4 AWG when installing amplifier systems with main fuse ratings above 60A Grounding problems are the leading cause of mis diagnosed amplifier failures 14 JL AUDIO e6450 Check the input signal using an AC voltmeter to measure the voltage from the source unit while an appropriate test tone Is played through the source unit disconnect the input cables from the amplifier prior to this test The frequency used should be in the range that is to be amplified by the amplifier example 50 Hz for a sub bass application or kHz for a full range high pass application A steady sufficient voltage between 0 2 and 8 0 volts should be present at the output of the signal cables Check the output of the amplifier Using the procedure explained in the previous check item after plugging the input cables back into the amplifier test for output at the speaker outputs of the amplifier Unless you enjoy test tones at high levels it is a good idea to remove the speaker wires from the amplifier while doing this Turn the volume up approximately half way 5V or more should be measured at the speaker outputs This output level can vary greatly between amplifiers but it should not be in the mi
27. o a distribution block mounted as close to the amplifiers as possible and should connect to the e6450 with 4 AWG power wire Please note that smaller AWG numbers mean bigger wire and vice versa 1 0 AWG is the largest 2 AWG is smaller then 4 AWG then 8 AWG etc To connect the power wires to the amplifier first back out the set screw on the top of the terminal block using the supplied 2 5 mm hex wrench Strip 1 2 inch 12 mm of insulation from the end of each wire and insert the bare wire into the terminal block seating it firmly so that no bare wire is exposed While holding the wire in place tighten the set screw firmly taking care not to strip the head of the screw The ground connection should be made using the same gauge wire as the power connection and should be kept as short as possible while accessing a solid piece of sheet metal in the vehicle The surface of the sheet metal should be sanded at the contact point to create a clean metal to metal connection between the chassis and the termination of the ground wire The use of a star washer to lock down the connection is advisable Any wires run through metal barriers such as firewalls must be protected with a high quality rubber grommet to prevent damage to the insulation of the wire Failure to do so may result in a dangerous short circuit MIMPORTANT Many vehicles employ small 10 AWG 6 AWG wire to ground the battery to the vehicle chassis and to connect t
28. ohms per channel 20 Hz 20 kHz Signal to Noise Ratio gt 104 dB referred to rated power A weighted 20 Hz 20 kHz noise bandwidth Frequency Response 0 Hz 25 kHz 0 I dB Damping Factor gt 200 4 per ch 50 Hz gt 100 202 per ch 50 Hz Slew Rate 22V us AMPLIFIER FILTER Filter Type State variable 2dB octave Butterworth with continuously variable cutoff frequency selection from 50 200 Hz Configurable as Low Pass or High Pass Defeatable DIMENSIONS LxWxH 17 7 x 9 25 x 2 36 450mm x 235mm x 60mm Due to ongoing product development all specifications are subject to change without notice JL AUDIO e6450 13 APPENDIX D TROUBLE SHOOTING MY AMPLIFIER DOESN T TURN ON Check to make sure there is 12V at the Remote connection of the amplifier In some cases the turn on lead from the source unit Is insufficient to turn on multiple devices and the use of a relay is required To test for this problem jump the 12V wire to the Remote terminal to see if the amplifier turns on If this does not work proceed to the next step Check the fuse not just visually but with a continuity meter It is possible for a fuse to have poor internal connections that cannot be found by visual inspection It is best to take the fuse out of the holder for testing If no problem is found with the fuse Inspect the fuse holder I GET A DISTORTED ATTENUATED SOUND COMING OUT OF THE SPEAKER S
29. ower wire minimum 4 AWG from the battery location to the amplifier mounting location taking care to route it in such a way that it will not be damaged and will not interfere with vehicle operation Use 2 AWG or 1 0 AWG power wire if additional amplifiers are being installed with the e6450 3 Connect power wire to the positive battery post Fuse the wire with an appropriate fuse block and connectors within 18 inches 45 cm wire length of the positive battery post This fuse is essential to protect the vehicle Do not install the fuse until the power wire has been connected to the amplifier 4 Run signal cables and remote turn on wire from the source unit to the amplifier mounting location 5 Run speaker wire from the speaker systems to the amplifier mounting location 6 Find a good solid metal grounding point close to the amplifier and connect the negative power wire to it using appropriate hardware Use the same size power wire as the wire connected to the 2V connection minimum 4 AWG no longer than 36 inches 90 cm from the amplifier to the ground connection point In some vehicles it may be necessary to upgrade the battery ground wire See page 5 for important notice 7 Securely mount the amplifier using the supplied screws 8 Connect the positive and negative power wires to the amplifier A fuse near the amplifier is not necessary 9 Connect the remote turn on wire to the amplifier 10 Connect the inp
30. p Input Jacks Preamp Input Jacks INSTALLATION APPLICATIONS This amplifier is designed for operation in vehicles with 12V negative ground electrical systems Use of this product in vehicles with positive ground and or voltages other than 2V may result in damage to the product and will void the warranty This product is not certified or approved for use In aircraft Do not attempt to bridge the outputs of this amplifier with the outputs of a second amplifier including an identical one Chassis Ground Connector pg 5 Channels amp 2 Speaker Outputs 12 V Power Remote Turn On 8 Connector Connector pg 8 pg 5 P8 5 Ch1 O 12VDC Ground Remote Oz min Ox 20 min 3 O e Bridged 42 min s e r Status Channel 1 amp 2 Controls F ter Fre Hz Channel 3 8 4 Controls Filter Freq Hz rag Input Sers ilter Mode O HP LP a D HP L E M ese Off HP L Channel 5 amp G Controls Bass Boost Ch 5 8 6 Ch 5 8 6 On Off Switch Input Sensitivity Filter Freguency pg 8 Control Selector Input Mode pg 7 Ch 5 8 6 pg 7 Remote Bass Switch Filter Mode Control Knob pg 6 Selection pg 8 pg 7 Or JL AUDIO e6450 PLANNING YOUR INSTALLATION It is important that you take the time to read this manual and that you plan out your installation carefully The following are some considerations that you must take into account when planning your Installation Coo
31. rating a pair of bridged channels into a load lower than 4Q is not recommended Because a bridged pair of channels requires that both channels receive input you need to connect both left and right inputs to the source unit Connection of only one input will result in reduced power output increased distortion and can cause the amplifier to overheat Do not do this When a pair of the e6450 s channels are operating in bridged mode the output will be in mono only one channel This mono channel can contain right channel only information left channel Ch5 L Ch6 ne O 22 min C 22 20 min C FO m Bridged AR min vennas JL AUDIO e6450 only information or the sum of the information from both the right and left channels In order to achieve one of these options configure the inputs to that pair of channels in one of these two ways Left Channel Only or Right Channel Only Information If you wish to send a Left only or Right only signal to a pair of the e6450 s channels use a Y Adaptor to split the single channel signal into both left and right RCA inputs or parallel connect both positive and both negative high level input connections to a single channel source signal This option is useful when using one pair of the e64505 channels to drive left channel speakers only and another pair of the e6450 s channels to drive right channel speakers only MIMPORTANT When parallel connecting both positive a
32. trols Most speakers are not designed to reproduce the full range of frequencies audible by the human ear For this reason most speaker systems are comprised of multiple speakers each dedicated to reproducing a specific frequency range Filters are used to select which frequency range Is sent to each section of a speaker system The division of frequency ranges to different speakers can be done with passive filters coils and or capacitors between the amplifier outputs and the speakers which are acceptable and commonly used for filtering between mids and tweeters Filtering between subwoofer systems and satellite speaker systems is best done with active filters which cut off frequency content at the input to the amplifier Active filters are more stable than passive filters and do not introduce extraneous resistance which can degrade subwoofer performance The active filter built into each channel of the e6450 can be used to eliminate potentially harmful and or undesired frequencies from making their way through the amplifier sections to the speaker s This serves to improve tonal balance and to avoid distortion and possible speaker failure Correct use of these filters can substantially increase the longevity and fidelity of your audio system Channel 1 8 2 Controls Filter rg Hz Channel 3 amp 4 Controls Filter Freq Hz OD Sens mM Mode 69 DI Input Sens Filter Mode gg 12C HO Ei m Off HP LP sg 20 80
33. ut cables to the amplifier 1 Connect the speaker wires to the amplifier 12 Carefully review the amplifiers control settings to make sure that they are set according to the needs of the system 13 Install the power wire fuse 60A for a single e6450 and reconnect the negative battery post terminal 14 Turn on the source unit at a low level to double check that the amplifier is configured correctly Resist the temptation to crank it up until you have verified the control settings 15 Make necessary adjustments to the input sensitivity controls to obtain the right overall output and the desired balance in the system See Appendix A page 12 for the recommended input sensitivity setting method 16 Enjoy the fruits of your labor with your favorite music POWER CONNECTIONS Before installing the amplifier disconnect the negative ground wire from the vehicle s battery This will prevent accidental damage to the system the vehicle and your body during installation 12VDC Ground Remote O JL AUDIO e6450 The e6450 s 12 VDC and Ground connections are designed to accept 4 AWG power wire 4 AWG is a minimum power wire size for this amplifier If you are installing the e6450 with other amplifiers and wish to use a single main power wire use 2 AWG or 1 0 AWG main power wire depending on the overall current demands of all the amplifiers in the system This 2 AWG or 1 0 AWG power wire should terminate int
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